The aim of the paper was to recognize the temporal structure of tropospheric ozone in chosen localities of north-western Poland in connection with meteorological conditions. The basis for the study was constituted by the 24-hour concentration values of O3 and 24-hour data of five meteorological elements in the period from 1st May 2005 to 30th April 2007, coming from three stations of State Monitoring of the Environment (from Szczecin, Widuchowa and Gorzów Wielkopolski), located in the neighbourhood of the Polish–German border in north-western Poland. The relation between O3 concentration and chosen meteorological elements was studied by means of correlation and regression analysis during the four climatic seasons of Poland: spring (March–May), summer (June–August), autumn (September–November), and winter (December–February). In the climatic conditions of north-western Poland, on average the highest concentration of tropospheric ozone amounting 68.8 µg.m-3, occurred in the spring season (March–May), and the lowest, reaching 32.0 µg.m-3 – in the winter season (November–February), and it was the highest in Widuchowa station, and in Gorzów Wielkopolski – the lowest. Out of meteorological elements analyzed, explicitly unfavourable influence on the clearness of atmosphere had an increase in the amounts of solar radiation, air temperature and wind speed, and a decrease in air humidity. The largest coefficients of determination of multiple regression equations, describing the relation between tropospheric ozone concentration and meteorological elements, were obtained in the autumn season and they ranged from 66.0% in Szczecin station to 82.3% in Gorzów Wielkopolski station.